Specification: Brand Purely Material PP nonwoven, PCRated power 0.4 W Shelf life 3 years
Features: Superior purification, three-dimensional circulation. Micro fresh air system, replaceable filter. Lightweight design, breathe freely.3D nose pad that fits the nose bridge.550m Ah polymer lithium battery, USB (Universal Serial Bus) charging.3 gears are freely adjustable. Package included:1 x Face mask 1 x Blue filter 1 x Green filter 1 x Filter cover disassembly tool 1 x S buckle 1 x Instruction manual